X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fbatch.cpp;h=af1d243e6cba1551e6be65255a55e69a4e7029cf;hp=89b8f48f4d44920d4b63a3829a44f81f9c2f44e8;hb=b0059bd068c99dadfc922584911fcb25a21b737b;hpb=3ba81ebaaec0c271d68cc12afbea86c394c3403d

diff --git a/source/batch.cpp b/source/batch.cpp
index 89b8f48f..af1d243e 100644
--- a/source/batch.cpp
+++ b/source/batch.cpp
@@ -1,3 +1,4 @@
+#include <msp/gl/extensions/arb_draw_instanced.h>
 #include <msp/gl/extensions/ext_draw_range_elements.h>
 #include <msp/gl/extensions/msp_legacy_features.h>
 #include <msp/gl/extensions/msp_primitive_restart.h>
@@ -225,6 +226,27 @@ unsigned Batch::get_index(unsigned i) const
 }
 
 void Batch::draw() const
+{
+	BindRestore _bind_ibuf(get_buffer(), ELEMENT_ARRAY_BUFFER);
+	const void *data_ptr = setup_draw();
+
+	if(EXT_draw_range_elements)
+		glDrawRangeElements(prim_type, min_index, max_index, size(), data_type, data_ptr);
+	else
+		glDrawElements(prim_type, size(), data_type, data_ptr);
+}
+
+void Batch::draw_instanced(unsigned count) const
+{
+	static Require req(ARB_draw_instanced);
+
+	BindRestore _bind_ibuf(get_buffer(), ELEMENT_ARRAY_BUFFER);
+	const void *data_ptr = setup_draw();
+
+	glDrawElementsInstanced(prim_type, size(), data_type, data_ptr, count);
+}
+
+const void *Batch::setup_draw() const
 {
 	if(restart)
 	{
@@ -242,23 +264,15 @@ void Batch::draw() const
 	else if(restart_index && restart_index<=max_index)
 		set_restart_index(0);
 
-	Buffer *ibuf = get_buffer();
-	const void *data_ptr;
-	BindRestore _bind_ibuf(ibuf, ELEMENT_ARRAY_BUFFER);
-	if(ibuf)
+	if(get_buffer())
 	{
 		if(dirty)
 			update_buffer();
 
-		data_ptr = reinterpret_cast<const void *>(get_offset());
+		return reinterpret_cast<const void *>(get_offset());
 	}
 	else
-		data_ptr = &data[0];
-
-	if(EXT_draw_range_elements)
-		glDrawRangeElements(prim_type, min_index, max_index, size(), data_type, data_ptr);
-	else
-		glDrawElements(prim_type, size(), data_type, data_ptr);
+		return &data[0];
 }
 
 void Batch::set_restart_index(unsigned index)